Peter Berners FellgettFRS,FIEE (11 April 1922 – 15 November 2008) was a British physicist. He was the professor of Cybernetics at theUniversity of Reading .

He is best known forFellgett's advantage: the improvement of thesignal-to-noise ratio by using multiplex measurements, i.e. simultaneous measurement at different wavelengths, such asFourier transform spectroscopy.

This work emerged from his 1949 dissertation (Theory of Infra-Red Sensitivities and Its Application to Investigations of Stellar Radiation in the Near Infra-Red) while at the University of Cambridge.^[1]

From Cambridge he moved to theRoyal Observatory Edinburgh where he continued his interests ininstrument science.

In 1964, he moved to the University of Reading where he became professor of Cybernetics and Instrument Physics. While at Reading he was involved on research inAmbisonics (withMichael Gerzon), as well as continuing his interest in instrumentation. He retired in 1987. His Professorship (in Cybernetics) was taken over byKevin Warwick.

He received theR. W. Wood Prize in 1977, became a fellow of theRoyal Society of Edinburgh in 1961 and a fellow ofthe Royal Society in 1986. He was an Honorary Fellow of theCybernetics Society.^[2]

• Obituary by Richard Mitchell
• Obituary by the Royal Society

• 1922 births
• 2008 deaths
• British physicists
• Fellows of the Royal Society
• Alumni of the University of Cambridge
• Academics of the University of Reading

• Articles with short description
• Short description matches Wikidata
• Use dmy dates from April 2022
• Articles with hCards